Studies on Mechanism of Nano Deformation in Subsurface Layer of Tool and Material and Technology of Mirror Surface Creating

点击翻译按钮获取中文摘要

1)In order to produce the super-bright stainless steel (surface gloss Gs[20℃] 950〜960, surface roughness: 0.05〜0.03μ m Ra), the new method of cold rolling has been found by the use of three roll polishing methods and various roll surface roughnesses as the technology of mirror surface creating in cold rolling of stainless steel sheets. Hereafter, the experimental analyses are required to determine the optimum conditions of cold rolling which give the highest super-bright gloss on the rolled surface of stainless steel sheet.2)The factors controlling the nano deformation in the subsurface layer of cold rolled stainless steel sheet have been shown in the range of more than about 0.07 μ m Ra in roughness. Hereafter, it is necessary to clarify the factors affecting the nano deformation in the subsurface layer of cold rolled stainless steel sheet and the highest super-bright gloss within less than about 0.07 μ m Ra in roughness.3)The use of the simplified tensor method has derived the von Mises type constitutive equation for the anisotropic materials. This constitutive equation has been verified by the comparison of the experimental results with the numerical simulated ones for the uniaxial tensile tests of steel sheets. Hereafter, it is necessary to analyze the deformation in the subsurface layer of cold rolled sheet numerically by applying this constitutive equation to the numerical model for the stress and strain analyses of material in cold rolling.